Since 1986, the Central Correspondence Lending Library (BCPC) has been delivering books to railway workers and their families across France, directly to their places of work. This unique service, which relies on the internal mail system of the French national railway company SNCF, is now under threat. The BCPC has about 11,000 members and processes around 90,000 book loans annually. However, the decline of the SNCF's internal mail system is causing disruptions, and its managers warn that the situation is becoming critical. The CGT, a major trade union, has called for a demonstration on October 22 in Paris if no progress is made by then. The BCPC was created to provide access to books for people who may find it difficult to visit libraries regularly due to long working hours, night shifts, weekends, mobility issues, or remote locations. It operates nationwide and collaborates with a network of local libraries called CASI, offering services such as book selection, advice, and acquisition for various railway-related institutions. The BCPC has been a vital resource for railway workers and their families, particularly retirees, who make up about 7% of its membership. The BCPC depends heavily on the SNCF's internal mail system to deliver and retrieve books. For over 30 years, this system allowed packages to be transported efficiently across the country, with drivers picking up and dropping off books at various stations, technical centers, and offices frequented by railway workers. However, the system has been deteriorating for several years. Some internal mail points, known as PDCI, have been closed, and the frequency of mail transport has decreased. These changes have made it increasingly difficult for the BCPC to maintain its service. The decline of the internal mail system has followed a series of reorganizations within the SNCF. In 2015, the company was restructured into a public railway group. Soon after, parts of the internal mail system were outsourced to Geopart, a subsidiary of Geodis, which itself is a subsidiary of the SNCF group. Regional sorting centers were gradually shut down, and in 2020, the SNCF underwent another transformation, splitting into several limited liability companies under a more subsidiary-based structure. These changes have led to a lack of transparency regarding the closure of internal mail points, making it difficult for the BCPC to plan effectively. The BCPC is part of a larger network of 23 CASI libraries that support local social activities. According to the CGT, there are 182 railway libraries across France. Each year, the central purchasing service of the Book and Library Service acquires around 100,000 books to supply these libraries, BCPC, and other facilities. Despite these efforts, the closure of internal mail points has left many books undelivered or returned without reaching their intended readers. The SNCF has cited cost-saving as a primary reason for the changes to its internal mail system. However, critics argue that this is more than just a logistical issue—it represents a loss of cultural and social investment by railway workers. For Nicolas Garcia, the situation reflects a broader concern: "It is money from railway workers that is devoted to social and cultural activities. A non-negligible part goes into the book policy. There, it is really a heritage that is dying out in a somewhat absurd way." A demonstration organized by the CGT is scheduled for Thursday, October 22 at noon at Lyon Station and Paris to demand a resumption of exchanges with the company and a lasting solution for book delivery. The SNCF had not responded to requests from ActuaLitté regarding the elimination of internal mail, the closure of internal mail points, and potential solutions to maintain book circulation at the time of publication.